Terrible after sales

Terrible customer service experience; they are responsive during the sales process, but post-purchase support is nonexistent. Issues remain unresolved, and management is inaccessible. Only junior staff and "team leaders" are available, who seem neither willing nor able to assist. I gave one star only because giving none wasn't an option. It's worth noting that over 7,000 other reviews also express dissatisfaction; this should be a clear indicator of the company's service quality.